Photographic-printing frame.



COLUMBIA PLANOGRAPH C0.. WASHINGTON, D. cv

Patented May 28, 1912.

3 SHEETS-SHEET 1.

ammo a G. B. JOHNSON.

. PHOTOGRAPHIG PRINTING FRAME.

APPLICATION FILED FEB. 1, 1911.

Patented May 28, 1912.

3 SHEETS-SHEET 2 fiwue/wtoz flffaiizam Patented May 28, 1912.

3 SHEETS-SHEET 3.

I 0. E. JOHNSON.

V PHOTOGBAPHIG PRINTING FRAME.

APPLICATION FILED FEB-l, 1911. 1,027,482. I

UNITED STATES PATENT OFFICE.

CHARLES E. JOHNSON, OF SALT LAKE CITY, UTAH.

PHOTOGRAPHIC-PBINTING FRAME.

To all whom it may concern Be it known that I, CHARLES E. JOHNSON, a citizen of the United States, residing at Salt Lake City, in the county of Salt Lake, State of Utah, have invented certain, new and useful Improvements in Photographic- Printing Frames; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to photographic printing frames.

The object of the invention resides in the construction of a printing frame of the character named which will increase the ease with which a negative can be applied to and removed from the frame.

A further object of the invention resides in the provision of a printing frame which will enable the same to be used in connection with negatives of varying thicknesses without in any manner affecting the efiiciency of the frame.

A still further object of the invention resides in the construction of a printing frame in which the sensitive paper may be easily applied and subsequently inspected during the operation of printing without danger of same becoming disarranged with respect to the negative.

Finally, the object of the invention resides in the construction of a photographic printing frame, which will be simple, durable, easy to manipulate and which may be manufactured at an exceedingly small cost.

With these and other objects in view, the invention consists in the details of construction and in the arrangement and combination of parts to be hereinafter more fully described and particularly pointed out in the appended claim.

In describing the invention in detail, reference will be had to the accompanying drawings, wherein like characters of reference denote corresponding parts in the several views; and in which,

Figure 1 is a plan view of a printing frame constructed in accordance with the invention, and shown in closed position; Fig. 2, a front view of the frame; Fig. 3, a section on the line 3-3 of Fig. 1; Fig. 4, a section on the line H of Fig. 1 with the parts of the frame shown in position for the reception of a negative. Fig. 5, a section on the line 5-5 of Fig. 1 with the parts of Specification of Letters Patent.

Application filed February 1, 1911.

Patented May 28,1912. Serial No. 605,931.

the frame shown in position for the application or removal of the print, and Fig. 6, a ylew similar to Fig. 5 with the parts shown in position for the inspectionof a print.

Referring to the drawings, the invention is shown as comprising a main frame A which includes side members 10 and 11 and end members 12 and 13. Secured in and projecting from the side member 11 is a plurality of screw studs 14, 15 and 16 upon which is vertically slidable a bar 17. Connected to the bar 17 by means of the hinges 18 and 19 is a secondary frame 20' which is adapted for a swinging movement toward and away from the main frame A. Extending longitudinally'of the bar 17 is a bow spring 21, the central portion of which; is engaged by the stud screw 15, while its terminals bear against the hinges 18 and 19 respectively. This spring 21 serves to yieldingly hold the bar 17 against movement away from the main frame A. However, when a negative of extraordinary thickness is placed upon the main frame and the secondary frame positioned to engage and hold said negative, the bar 17 will yield and move slightly away from the main frameso as to allow the secondary frame to engage the negative continuously despite the great thickness of the latter.

Mounted longitudinally on the side member 10 is a bar 22, upon the outer face of which is pivotally mounted a latch 23 by means of a set screw 24:. This latch is of sufficient length so that when the same is rotated on its pivot one end thereof will overlie the outer face of the secondary frame when the latter is disposed at the limit of its movement toward the main frame. Movement of this latch 23 beyond complete locking position is prevented by means of a depending arm 25 secured thereto and adapted to engage the bar 22.

The back of the printing frame comprises a pair of hingedly connected sections 26 and 27, the latter of which is secured to the secondary frame 20 by means of hinges 28 and 29. The sections 26 and 27 of the back are so disposed that they may be swung into and out of the secondary frame 20. A rod 30 serves to connect the members of both of the hinges 28 and 29 and is encircled intermediately by a spring 31, one end of which spring is fixed to the section 27of the back, while its other end is fixed to the frame 20. The tendency of this spring, as will be apparent, is to constantly move the back formed of the sections 26 and 27 to open position. lhis back is secured in closed position by means of a catch 32 pivoted on the frame 20 and provided intermediately with a laterally extending tongue 33 adapted to partially overlie the section 26 of the back when the latter is closed. The movement of the catch 32 on its pivot is limited by means of a plate 34: which overlie said catch and has its terminals secured to the secondary frame 20.

hen it is desired to inspect a print previously disposed in the frame, it is only necessary for the operator to hold his hand upon the section 27 of the back and move the catch 32 to unlocked position. The section 26 can then be swung to the position shown in Fig. 6 and an inspection of the print readily had.

In cases where the negative from which the print is to be made is smaller than the opening in the main frame, a plate of glass is seated upon the main frame and the negative proper placed upon this plate of glass and the frame then used in the ordinary manner; the yielding bar in such an instance serving to bring the secondary frame into proper position on the negative despite the increased thickness presented by the negative and the supporting glass.

While one particular form of constructing the frame has been shown and described, it will be noted that the various changes in details of construction may be resorted to without in any manner departing from the scope of the invention as set forth in the appended claim.

WVhat is claimed is A photographic printing frame comprising a main frame including side and end members, a plurality of studs projecting from one of said side members, a bar slidably mounted on said studs for movement toward and away from the side members, a bow spring having its central portion engaged by one of said studs and its terminals in engagement with said bar, whereby the latter is yieldingly held against movement from the side member, a second bar fixed to the opposite side member, a secondary frame hinged to said yieldable bar for movement toward and away from the main frame, a catch mounted on said second named bar for engagement with the free end of the secondary frame to lock same against movement away from the main frame, a hinged back carried by the secondary frame and received therein, and a catch on said secondary frame for locking said back therein.

In testimony whereof, I aflix my signature, in presence of two witnesses.

CHARLES E. JOHNSON.

Witnesses:

F. H. KING, 'S. J. JACOBSEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

